There was already an "experiment", of sorts, conducted in Japan. They previously had child porn legal there, and then a few years back they made it legal. A win for everyone (or at least children who don't like being raped), right?
Actually, no: the number of reported child abuse cases went up, dramatically (see the third slide of this presentation):
https://www.fmu.ac.jp/home/public_h/...%20handout.pdf).
It turns out, child predators already have plenty of incentive not to rape children; that's not the problem. It's like when the penalty for murder is 40 years in prison, and politicians change it to 50: it doesn't lower the murder rate, because no one thinks "well if it's only 40 years I'm totally going to kill this guy, but if it's 50 fuck that".
Same issue with sex offenders: it's not that there isn't enough deterrence, it's that they have (sick) urges which cause them to harm others
despite the consequences. More threats don't help ... but giving those people an outlet for their urges, which doesn't harm anyone else, does.
If anyone is interested in learning more (doubtful in this forum), this article
You’re 16. You’re a Pedophile. You Don’t Want to Hurt Anyone. What Do You Do Now? is fascinating. If people
really want to stop child rape, it begins with understanding the sex offender as a human being ... but our own (human) biases make us want to do the exact opposite (and so, child sex abuse continues ... while idiots continue to pointlessly censor video games).